Description
Unit Mini PDM is a digital MEMS silicon-based microphone based on the PDM (Pulse Density Modulation) signal. The microphone features a high signal-to-noise ratio, high sensitivity, low power consumption, strong resistance to RF interference, and a smooth frequency response. It automatically switches the microphone state (power-off / active / sleep) according to the clock frequency, making it suitable for audio data collection in wearable devices and smart digital products.
Features
- PDM signal output (CLK/DAT)
- High sensitivity, high signal-to-noise ratio
- Low power consumption
- Resistant to RF interference
- Compatible with LEGO
Includes
- 1 x Unit Mini PDM
- 1 x HY2.0-4P Grove cable (5cm)
Applications
- Spectrum analyzer
- Recording
- Sound level meter
Specifications
| Specification | Parameter |
|---|---|
| Digital Microphone | SPM1423 |
| Sensitivity | 94dB SPL@1KHz, typical: -22dBFS |
| Signal-to-Noise Ratio | 94dB SPL@1KHz, A-weighted, typical: 61.4dB |
| Total Harmonic Distortion | 100dB SPL@1KHz, typical: 1% |
| Operating Current | 600µA |
| Net Weight | 4g |
| Gross Weight | 8g |
| Product Size | 24 x 24 x 13mm |
| Package Size | 136 x 92 x 13mm |
| Housing Material | Plastic (PC) |